This article explains why binding a process to a specific CPU improves cache performance, shows how to set CPU affinity on Linux using the sched_setaffinity system call, and walks through the kernel's internal implementation—including run‑queue structures, migrate_task, and __migrate_task—illustrated with code and diagrams.
This article explains the Linux load average metric, the run queue structure, why both running (R) and uninterruptible (D) processes are counted, and how the kernel uses an exponential weighted moving average to compute the 1‑, 5‑, and 15‑minute load values.
This article explains what Linux load average is, how the kernel’s run‑queue (including R and D state processes) is used to compute it via an exponential weighted moving average, and how to interpret the resulting metrics for system performance.
This article outlines how the Linux CPU scheduler manages threads and interrupts, explains context switches, run queue length, CPU utilization metrics, typical performance thresholds, and introduces monitoring tools like vmstat and mpstat, followed by real‑world troubleshooting examples.
